ChronTrol XT Series Manual de usuario

XT Series Timer ChronTrol

User's Guide

IMPORTANT SAFEGUARDS

Always follow basic safety precautions when operating electrical equipment.

Please observe the following safeguards:

• Read and save all instructions.

• To avoid electrical shock, do not immerse timer in water or other liquids,

and do not operate when wet.

• All equipment controlled by this timer must have wattage ratings within the

capacity of this timer, as stated in the SPECIFICATIONS AND

INSTALLATION instructions. Exceeding the rated capacity may result in

overheating and damage.

• Do not use this timer where flammable gas or fumes exist.

• Do not use this timer to control equipment that is damaged or

malfunctions.

• Extreme external interference can, in rare situations, cause random

behavior of this device. Do not use this timer in applications where

random ON or OFF signals are potentially hazardous.

WARNING: If using this timing device in a situation or

environment that is critical to the welfare

and/or sustenance of laboratory specimens,

please test all programs by carefully

simulating or staging the critical events.

This document is furnished solely for the convenience of the authorized user without warranty

or obligation of any kind whatsoever. ChronTrol Corporation shall not be responsible for any

damages, including consequential, caused by reliance on information contained herein

including, without limitation, inaccuracies, errors, or omissions of any kind whatsoever.

ChronTrol Corporation

6160 Fairmount Avenue

San Diego, California 92120

(619) 282-8686

How to Use this Manual

The XT User’s Guide is divided into five sections.

Section 1: Introduction describes the XT’s physical characteristics

(keyboard, LED's, circuits, and input connector). It also briefly describes the

features and capabilities of the XT.

Section 2: Set Up describes step-by-step how to set system parameters (such

as the date and time) and how to program the XT to perform simple timing

operations (such as turning a circuit ON at a specific time and OFF at a

specific time).

Section 3: Programming Procedures provides XT programming strategies

and tips, explains how to enter a program into the XT, and how to take

advantage of its wide-ranging and powerful capabilities.

Section 4: Sample Programs includes step-by-step instructions for

programming the XT. These sample programs illustrate the most common

and direct programming techniques.

Appendix A: Special Programming Considerations discusses Interval

Timing, the difference between a day and a twenty-four hour period, Day

Omission, the Daylight Saving Time standard, and the effect each of these has

on programmed operations.

Conventions Used in the Manual:

BOLD CAPS Represent keyboard keys you should press. DAY ENTER

means press the DAY key and then the ENTER key.

MMDDYY Expresses how dates and times appear on the display:

HHMMSS Month/Day/Year is expressed as MMDDYY. For example,

December 3, 1998, displays as 120398. Hours and minutes

are expressed as HHMM. For example, 11:45 displays as

1145.

P–nVariables are expressed in italics. For example, an “n” in

italics indicates a number to be supplied by the user.

boldface type Identifies information that appears on the XT’s display and,

within text, indicates critical information.

XT Series Timer ChronTrol

2User's Guide

Table of Contents

Section 1 - Introduction

Introduction....................................................................................................5

XT Features....................................................................................................6

Physical Description ......................................................................................8

The XT Display ...................................................................................8

The XT LED Indicators.....................................................................11

Keyboard ...........................................................................................12

Section 2 - Setup

Set-up Procedure..........................................................................................13

Setting System Parameters.....................................................................13

Time...................................................................................................13

Change Between 12- and 24-Hour Format................................13

Date....................................................................................................14

Day of Week......................................................................................14

Lock Code.........................................................................................14

Set the Lock Code .......................................................................14

Lock the Keyboard ......................................................................14

Unlock the Keyboard...................................................................15

Change the Lock Code................................................................15

Clear the Lock Code....................................................................15

Manual Operation ........................................................................................16

Manually Switching a Circuit...........................................................16

Manually Activating a Program .......................................................16

Two Simple Programs..................................................................................17

Section 3 - Programming Procedures

Features ........................................................................................................18

On/Off and Interval Programs.....................................................................18

Circuits and Other Control Assignments....................................................19

Day Omission...............................................................................................19

Cycle Length.................................................................................................19

Calendar Feature..........................................................................................19

Entering a Program......................................................................................20

Program Number ..............................................................................22

Circuit Assignments..........................................................................22

Program Assignments.......................................................................22

Input Assignments.............................................................................22

ChronTrol XT Series Timers

User's Guide 3

Interval Specification........................................................................23

On Time.............................................................................................24

On Date..............................................................................................24

Off Time............................................................................................24

Off Date.............................................................................................24

Day Omission....................................................................................25

Cycle Length......................................................................................25

Inputs (External Activation)........................................................................26

Setting Inputs.....................................................................................26

Manually Enabling and Disabling an Input......................................27

Functions......................................................................................................27

Function 1: Daylight Saving Time...................................................27

Function 2: Sequence Start...............................................................27

Creating and Editing the Holiday List.........................................................28

Review..........................................................................................................29

System Parameters Review..........................................................................30

Review Date......................................................................................30

Review the Day of Week...................................................................30

Review the Holiday List...................................................................30

Review the Seconds..........................................................................30

Program Review...........................................................................................32

Begin Program Review ....................................................................32

Step A: Program Status.....................................................................32

Step B: Control Assignments...........................................................32

Step C: On Time................................................................................32

Step D: Off Time...............................................................................33

Step E: Interval Length .....................................................................33

Step F: Omitted Days........................................................................33

Step G: Cycle Length........................................................................33

Step H: Exit Program Review .........................................................33

Input Review ................................................................................................34

Cross Review ...............................................................................................34

Countdown Timer........................................................................................35

Changing Program Entries...........................................................................36

Deleting Program Entries............................................................................36

Factory Settings (Defaults)..........................................................................36

XT Series Timer ChronTrol

4User's Guide

Section 4 - Sample Programs

Sample Program 1: Daylight Saving Time..................................................38

Sample Program 2: Sequence Start.............................................................38

Sample Program 3: On/Off Program with Day Omit.................................38

Sample Program 4: Interval Program with Cycle Length ..........................39

Sample Program 5: On/Off Program with Cycle Length...........................40

Sample Program 6: On/Off Program with Day-based Cycle.....................40

Sample Program 7: 24-hour based Program ..............................................41

Sample Program 8: Program Controlling Program ...................................42

Sample Program 9: Using Inputs.................................................................43

Sample Program 10: Re-trigger and Time Out...........................................44

Sample Program 11: School Bells ..............................................................45

Sample Program 12: Delay Program ..........................................................45

Appendix A: Special Programming Considerations

Interval Timing.............................................................................................46

Overlapping Midnight..................................................................................47

Cycles and Daylight Saving Time................................................................47

How to Set a Day-Based Program ...................................................48

ChronTrol XT Series Timers

User's Guide 5

Section 1: Introduction

Congratulations on your purchase! Your ChronTrol XT is a programmable,

microprocessor-based timer that can control up to 16 devices (outputs) and

can receive inputs from up to 8 external devices. The XT can easily be

programmed to switch circuits on and off at specific times and dates, for

durations, on a cycle, or from external devices attached to its optional input

connector. 20 to 40 timing programs can be stored in the XT’s memory.

The XT can be programmed down to the second. Its versatile calendar

automatically adjusts for leap years, Daylight Saving Time and holidays.

Programs are easy to set, review, and change through the 24-pushbutton,

audible keyboard.

The XT family includes four basic models: table-top, wall-mount, expandable

wall-mount, and rack-mount. Table-top models are available with two or

four circuits, AC outlets or dry contacts. All other models are available in

two- to sixteen-circuit configurations with dry contact outputs rated up to 20

Amps. The SPECIFICATIONS AND INSTALLATION sheet for your

particular ChronTrol model is included with your unit. Specification sheets

for other types are available upon request. The features and programming

techniques described in this manual apply to all models of the XT.

XT Series Timer ChronTrol

6User's Guide

XT Features

The XT supports the following list of functions and programming features.

For complete operational descriptions of these functions, see Section 3:

Programming Procedures.

• Manual Operation. ChronTrol’s XT series is designed around its

advanced programming capabilities; however, you can manually override

programmed settings through the keyboard without waiting for or

disturbing programmed operations.

• Advanced Programming. The XT’s advanced programming features

open the door to many exciting possibilities. Through the XT keyboard,

you can enter up to 40 programs. Each program has a unique number

which identifies it when entering, reviewing, or changing its settings.

Programs can be set to control circuits, inputs, even other programs.

These are referred to as Control Assignments. Control Assignments can

switch on and off on a daily or weekly schedule, repeating at rates from

two seconds to one year. They can also switch on and off on specific

dates, or one time only, responding to either clock time or outside

signals.

• Program Review, Verification, and Change. The XT allows you to

review, verify, and change any and all of its settings. You can review

individual programs and input settings. You can also review specific

information, such as the activity of a Control Assignment, and the

programs or inputs to which it is assigned.

• Day Omission. The XT’s programming flexibility allows you to enter

programs that execute on a regular schedule yet automatically omit

specified days of the week, for example Saturday and Sunday.

• Holidays. Holidays can occur on any day of the year. The XT allows you

to create your own Holiday List. You may then specify, within each

program, whether or not that program will execute on the days you’ve

included in your Holiday List.

• Functions. Two special functions are provided for your convenience:

Daylight Saving Time (Function 1), which adjusts the Time of Day clock

by one hour; and Sequence Start (Function 2), which controls the rate at

which circuits are restored to the ON position following a power failure.

ChronTrol XT Series Timers

User's Guide 7

• Inputs. On XT models equipped with the N8 Input Option (see

SPECIFICATIONS AND INSTALLATION sheet), programs, circuits, and

inputs can be switched based on external conditions. Through the input

connector, devices such as temperature and light detectors can be

connected to the XT. You may then specify that certain programs or

circuits be switched by a signal from these external devices. You can

program an input to ignore external signals as well.

• Locking Keyboard. The XT provides a locking keyboard. With a user-

programmable Lock Code, you can prevent unauthorized access to the

XT keyboard.

• Power Fail Protection. The Time of Day continues to operate, with

crystal accuracy, during power failure. A nine-volt battery keeps the

clock operating and protects the system memory to prevent the loss of

stored programs. When power returns, all ON and OFF times are saved.

Outputs are switched to the proper positions for the current time, in

sequence or all at once.

• Countdown Timer. The XT can count down the hours, minutes, and

seconds for any event you specify, such as the execution of a program or

the switching of a circuit.

XT Series Timer ChronTrol

8User's Guide

Physical Description

The following sections describe the physical characteristics of the XT

controller and define the function of each.

The XT Display

The XT’s display serves two functions: ordinarily it displays the current Time

of Day in hours, minutes, and seconds, but during programming it confirms

entries and reviews previous settings. Figure 1 illustrates the XT Display and

Indicators.

Figure 1: XT Display and Indicators

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